Which one is the coldest planet in the Solar System ?

Question

In Solar System, which planet's day is longer than its year since it completes one rotation on the axis in 243 earth days but takes only 225 earth days to orbit the Sun ?

Answer 1

Uranus - Not the last farthest in our solar system and its colder then Neptune which is farthest from the sun.

Why: There seems to be two possible answers to this question. One is that Uranus seems to have been knocked on its side, possibly by a giant impact long ago, which has caused the heat from within its core to spill out into space. Alternatively, some astronomers point the finger at the ice giant’s incredibly energetic atmosphere during the planet’s equinox where it is most lively. It is here that scientists believe that the stirred atmosphere could be oozing heat.

Answer 2

As the planets in our Solar System get further away from the Sun, they generally get colder. So what is the coldest planet of our Solar System. That would be Neptune, the 8th and final planet in the Solar System. If Pluto was still a planet, it would be colder, but now it's Neptune.May 28, 2010
Neptune is located 4.5 billion km from the Sun, on average, and it receives a fraction of the sunlight that the other planets receive. In fact, even though it’s only a little further from the Sun than Uranus, it sees only 40% of the solar radiation received by Uranus.